To deactivate your subscription, you must log in to your Google Play account and go to the Subscriptions tab. There you will be able to cancel your subscription.
For iOS users, you should open the AppStore, choose your account in the right upper corner, and tap on your name. There, you can find the "Subscriptions" tab. In this section, you can manage the settings of existing subscriptions. You can cancel any subscriptions there.
After these steps, the subscription will be canceled.